dun aonghasa or dun aengus, the largest prehistoric stone fort of the aran islands, popular tourist attraction, important

aerial inishmore ireland irish island landscape legacy limestone magnificent monument mystery neolithic ocean prehistoric rock ruins sea stone tourism tourist travel view inis mor hill galway gaelic ancient aran architecture atlantic flyover wave eire cliffside europe dun aonghasa barbaric dramatic extant aengus culture edge coast drone wall celtic attraction bay fort cliff